Rule History

alert udp $HOME_NET any -> $EXTERNAL_NET [!3478,1023:] (msg:"ET INFO Session Traversal Utilities for NAT (STUN Binding Request On Non-Standard High Port)"; content:"|00 01|"; depth:2; content:"|21 12 a4 42|"; distance:2; within:4; reference:url,tools.ietf.org/html/rfc5389; classtype:misc-activity; sid:2033078; rev:4; metadata:created_at 2021_06_03, deployment Perimeter, deployment alert_only, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_28;)